2.2. Building Documentation
To create a rendered copy of this documentation locally you can use the Sphinx tool to build and package the plain-text documents into HTML-formatted pages.
If you are building the documentation for the first time then you will need to check that you have the required software packages, as described in the Prerequisites section that follows.
An online copy of the documentation is available at https://www.trustedfirmware.org/docs/tf-a, if you want to view a rendered copy without doing a local build.
For building a local copy of the TF-A documentation you will need:
Python 3 (3.8 or later)
PlantUML (1.2017.15 or later)
Poetry Python dependency and package manager
Python modules specified in
Optionally, the Dia application can be installed if you need to edit existing
.diadiagram files, or create new ones.
Poetry will handle the creation of a virtual build environment, either creating a new environment or re-using one created by the user, and installing all dependencies herein. This ensures that the Python environment is isolated from your system environment.
An example set of installation commands for Ubuntu follows:
sudo apt install python3 python3-pip plantuml [dia] curl -sSL https://install.python-poetry.org | python3 - poetry install
2.2.2. Building rendered documentation
Documents can be built into HTML-formatted pages from project root directory by running the following command.
poetry run make doc
Output from the build process will be placed in:
We also support building documentation in other formats. From the
directory of the project, run the following command to see the supported
formats. It is important to note that you will not get the correct result if
the command is run from the project root directory, as that would invoke the
top-level Makefile for TF-A itself.
poetry run make help
run command used above executes
make in the projects virtual
environment. To spawn a shell in this environment, use
shell. For other use cases, please see the official Poetry
2.2.3. Building rendered documentation from a container
There may be cases where you can not either install or upgrade required dependencies to generate the documents, so in this case, one way to create the documentation is through a docker container. The first step is to check if docker is installed in your host, otherwise check main docker page for installation instructions. Once installed, run the following script from project root directory
docker run --rm -v $PWD:/TF sphinxdoc/sphinx \ bash -c 'cd /TF && \ poetry install && poetry run make doc'
The above command fetches the
sphinxdoc/sphinx container from docker
hub, launches the container, installs documentation requirements and finally
creates the documentation. Once done, exit the container and output from the
build process will be placed in:
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